The designated shooters of the US Marine Corps (USMC) 5th Marine Regiment, 1ST Marine Division, Camp Pendleton, California (CA), lay on line to BZO (Battle Site Zero) their 5.56 mm M16A2 rifles at Camp Coyote in Northern Kuwait during Operation ENDURING FREEDOM. BZO aligns the weapon to the shooters natural point of aim, allowing rapid acquisition of a target and hitting it in the heat of battle